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4f04d8f0 CM |
1 | /* |
2 | * Copyright (C) 2012 ARM Ltd. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | */ | |
16 | #ifndef __ASM_PGTABLE_HWDEF_H | |
17 | #define __ASM_PGTABLE_HWDEF_H | |
18 | ||
6b4fee24 CM |
19 | #define PTRS_PER_PTE (1 << (PAGE_SHIFT - 3)) |
20 | ||
21 | /* | |
22 | * PMD_SHIFT determines the size a level 2 page table entry can map. | |
23 | */ | |
9f25e6ad | 24 | #if CONFIG_PGTABLE_LEVELS > 2 |
6b4fee24 CM |
25 | #define PMD_SHIFT ((PAGE_SHIFT - 3) * 2 + 3) |
26 | #define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) | |
27 | #define PMD_MASK (~(PMD_SIZE-1)) | |
28 | #define PTRS_PER_PMD PTRS_PER_PTE | |
29 | #endif | |
30 | ||
31 | /* | |
32 | * PUD_SHIFT determines the size a level 1 page table entry can map. | |
33 | */ | |
9f25e6ad | 34 | #if CONFIG_PGTABLE_LEVELS > 3 |
6b4fee24 CM |
35 | #define PUD_SHIFT ((PAGE_SHIFT - 3) * 3 + 3) |
36 | #define PUD_SIZE (_AC(1, UL) << PUD_SHIFT) | |
37 | #define PUD_MASK (~(PUD_SIZE-1)) | |
38 | #define PTRS_PER_PUD PTRS_PER_PTE | |
4f04d8f0 CM |
39 | #endif |
40 | ||
6b4fee24 CM |
41 | /* |
42 | * PGDIR_SHIFT determines the size a top-level page table entry can map | |
43 | * (depending on the configuration, this level can be 0, 1 or 2). | |
44 | */ | |
9f25e6ad | 45 | #define PGDIR_SHIFT ((PAGE_SHIFT - 3) * CONFIG_PGTABLE_LEVELS + 3) |
6b4fee24 CM |
46 | #define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT) |
47 | #define PGDIR_MASK (~(PGDIR_SIZE-1)) | |
48 | #define PTRS_PER_PGD (1 << (VA_BITS - PGDIR_SHIFT)) | |
49 | ||
50 | /* | |
51 | * Section address mask and size definitions. | |
52 | */ | |
53 | #define SECTION_SHIFT PMD_SHIFT | |
54 | #define SECTION_SIZE (_AC(1, UL) << SECTION_SHIFT) | |
55 | #define SECTION_MASK (~(SECTION_SIZE-1)) | |
56 | ||
4f04d8f0 CM |
57 | /* |
58 | * Hardware page table definitions. | |
59 | * | |
084bd298 SC |
60 | * Level 1 descriptor (PUD). |
61 | */ | |
c79b954b | 62 | #define PUD_TYPE_TABLE (_AT(pudval_t, 3) << 0) |
084bd298 | 63 | #define PUD_TABLE_BIT (_AT(pgdval_t, 1) << 1) |
206a2a73 SC |
64 | #define PUD_TYPE_MASK (_AT(pgdval_t, 3) << 0) |
65 | #define PUD_TYPE_SECT (_AT(pgdval_t, 1) << 0) | |
084bd298 SC |
66 | |
67 | /* | |
4f04d8f0 CM |
68 | * Level 2 descriptor (PMD). |
69 | */ | |
70 | #define PMD_TYPE_MASK (_AT(pmdval_t, 3) << 0) | |
71 | #define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0) | |
72 | #define PMD_TYPE_TABLE (_AT(pmdval_t, 3) << 0) | |
73 | #define PMD_TYPE_SECT (_AT(pmdval_t, 1) << 0) | |
084bd298 | 74 | #define PMD_TABLE_BIT (_AT(pmdval_t, 1) << 1) |
4f04d8f0 CM |
75 | |
76 | /* | |
77 | * Section | |
78 | */ | |
af074848 | 79 | #define PMD_SECT_VALID (_AT(pmdval_t, 1) << 0) |
db4ed53c | 80 | #define PMD_SECT_PROT_NONE (_AT(pmdval_t, 1) << 58) |
af074848 SC |
81 | #define PMD_SECT_USER (_AT(pmdval_t, 1) << 6) /* AP[1] */ |
82 | #define PMD_SECT_RDONLY (_AT(pmdval_t, 1) << 7) /* AP[2] */ | |
4f04d8f0 CM |
83 | #define PMD_SECT_S (_AT(pmdval_t, 3) << 8) |
84 | #define PMD_SECT_AF (_AT(pmdval_t, 1) << 10) | |
85 | #define PMD_SECT_NG (_AT(pmdval_t, 1) << 11) | |
8e620b04 CM |
86 | #define PMD_SECT_PXN (_AT(pmdval_t, 1) << 53) |
87 | #define PMD_SECT_UXN (_AT(pmdval_t, 1) << 54) | |
4f04d8f0 CM |
88 | |
89 | /* | |
90 | * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers). | |
91 | */ | |
92 | #define PMD_ATTRINDX(t) (_AT(pmdval_t, (t)) << 2) | |
93 | #define PMD_ATTRINDX_MASK (_AT(pmdval_t, 7) << 2) | |
94 | ||
95 | /* | |
96 | * Level 3 descriptor (PTE). | |
97 | */ | |
98 | #define PTE_TYPE_MASK (_AT(pteval_t, 3) << 0) | |
99 | #define PTE_TYPE_FAULT (_AT(pteval_t, 0) << 0) | |
100 | #define PTE_TYPE_PAGE (_AT(pteval_t, 3) << 0) | |
084bd298 | 101 | #define PTE_TABLE_BIT (_AT(pteval_t, 1) << 1) |
4f04d8f0 CM |
102 | #define PTE_USER (_AT(pteval_t, 1) << 6) /* AP[1] */ |
103 | #define PTE_RDONLY (_AT(pteval_t, 1) << 7) /* AP[2] */ | |
104 | #define PTE_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */ | |
105 | #define PTE_AF (_AT(pteval_t, 1) << 10) /* Access Flag */ | |
106 | #define PTE_NG (_AT(pteval_t, 1) << 11) /* nG */ | |
2f4b829c | 107 | #define PTE_DBM (_AT(pteval_t, 1) << 51) /* Dirty Bit Management */ |
8e620b04 CM |
108 | #define PTE_PXN (_AT(pteval_t, 1) << 53) /* Privileged XN */ |
109 | #define PTE_UXN (_AT(pteval_t, 1) << 54) /* User XN */ | |
4f04d8f0 CM |
110 | |
111 | /* | |
112 | * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers). | |
113 | */ | |
114 | #define PTE_ATTRINDX(t) (_AT(pteval_t, (t)) << 2) | |
115 | #define PTE_ATTRINDX_MASK (_AT(pteval_t, 7) << 2) | |
116 | ||
36311607 MZ |
117 | /* |
118 | * 2nd stage PTE definitions | |
119 | */ | |
120 | #define PTE_S2_RDONLY (_AT(pteval_t, 1) << 6) /* HAP[2:1] */ | |
121 | #define PTE_S2_RDWR (_AT(pteval_t, 3) << 6) /* HAP[2:1] */ | |
122 | ||
8199ed0e | 123 | #define PMD_S2_RDONLY (_AT(pmdval_t, 1) << 6) /* HAP[2:1] */ |
ad361f09 CD |
124 | #define PMD_S2_RDWR (_AT(pmdval_t, 3) << 6) /* HAP[2:1] */ |
125 | ||
36311607 MZ |
126 | /* |
127 | * Memory Attribute override for Stage-2 (MemAttr[3:0]) | |
128 | */ | |
129 | #define PTE_S2_MEMATTR(t) (_AT(pteval_t, (t)) << 2) | |
130 | #define PTE_S2_MEMATTR_MASK (_AT(pteval_t, 0xf) << 2) | |
131 | ||
132 | /* | |
133 | * EL2/HYP PTE/PMD definitions | |
134 | */ | |
135 | #define PMD_HYP PMD_SECT_USER | |
136 | #define PTE_HYP PTE_USER | |
137 | ||
4f04d8f0 | 138 | /* |
87366d8c | 139 | * Highest possible physical address supported. |
4f04d8f0 | 140 | */ |
87366d8c | 141 | #define PHYS_MASK_SHIFT (48) |
4f04d8f0 CM |
142 | #define PHYS_MASK ((UL(1) << PHYS_MASK_SHIFT) - 1) |
143 | ||
144 | /* | |
145 | * TCR flags. | |
146 | */ | |
dd006da2 AB |
147 | #define TCR_T0SZ_OFFSET 0 |
148 | #define TCR_T1SZ_OFFSET 16 | |
149 | #define TCR_T0SZ(x) ((UL(64) - (x)) << TCR_T0SZ_OFFSET) | |
150 | #define TCR_T1SZ(x) ((UL(64) - (x)) << TCR_T1SZ_OFFSET) | |
151 | #define TCR_TxSZ(x) (TCR_T0SZ(x) | TCR_T1SZ(x)) | |
152 | #define TCR_TxSZ_WIDTH 6 | |
4f04d8f0 CM |
153 | #define TCR_IRGN_NC ((UL(0) << 8) | (UL(0) << 24)) |
154 | #define TCR_IRGN_WBWA ((UL(1) << 8) | (UL(1) << 24)) | |
155 | #define TCR_IRGN_WT ((UL(2) << 8) | (UL(2) << 24)) | |
156 | #define TCR_IRGN_WBnWA ((UL(3) << 8) | (UL(3) << 24)) | |
157 | #define TCR_IRGN_MASK ((UL(3) << 8) | (UL(3) << 24)) | |
158 | #define TCR_ORGN_NC ((UL(0) << 10) | (UL(0) << 26)) | |
159 | #define TCR_ORGN_WBWA ((UL(1) << 10) | (UL(1) << 26)) | |
160 | #define TCR_ORGN_WT ((UL(2) << 10) | (UL(2) << 26)) | |
161 | #define TCR_ORGN_WBnWA ((UL(3) << 10) | (UL(3) << 26)) | |
162 | #define TCR_ORGN_MASK ((UL(3) << 10) | (UL(3) << 26)) | |
163 | #define TCR_SHARED ((UL(3) << 12) | (UL(3) << 28)) | |
35a86976 | 164 | #define TCR_TG0_4K (UL(0) << 14) |
4f04d8f0 | 165 | #define TCR_TG0_64K (UL(1) << 14) |
35a86976 CM |
166 | #define TCR_TG0_16K (UL(2) << 14) |
167 | #define TCR_TG1_16K (UL(1) << 30) | |
168 | #define TCR_TG1_4K (UL(2) << 30) | |
169 | #define TCR_TG1_64K (UL(3) << 30) | |
4f04d8f0 | 170 | #define TCR_ASID16 (UL(1) << 36) |
d50240a5 | 171 | #define TCR_TBI0 (UL(1) << 37) |
2f4b829c CM |
172 | #define TCR_HA (UL(1) << 39) |
173 | #define TCR_HD (UL(1) << 40) | |
4f04d8f0 CM |
174 | |
175 | #endif |